What two functions do windows provide?

Windows serve multiple essential functions in a building's design, and two primary roles they fulfill are to provide light and ventilation.

Natural light is crucial in both residential and commercial spaces. Windows allow sunlight to enter, which not only brightens a room and reduces the need for artificial lighting but also contributes to the psychological well-being of occupants by creating a more inviting and pleasant atmosphere.

Ventilation is another vital function of windows. Proper airflow is necessary for maintaining indoor air quality and comfort. Opening windows can help to circulate fresh air and remove stale air and pollutants from inside a building. This is particularly important in spaces where odors or moisture can accumulate.

While safety, aesthetics, insulation, privacy, and heating are important considerations in window design, they do not capture the two fundamental roles windows play in the context of getting light and fresh air into a building.